MARIETTA, Ga. (AP) — Cobb County prosecutors say three people have pleaded guilty to scamming 25 elderly metro Atlanta residents out of more than $74,500.

Officials say Larry McGill, Nicholas Mitchell and Helen Johnson pleaded guilty to racketeering Thursday. Authorities say the three targeted homeowners between July of 2011 and February of 2013 and approached homeowners with information about home improvement services.

Authorities say the three gave flat-rate estimates for the work to the elderly victims and then charged additional fees after the work had been completed.

McGill and Mitchell were both sentenced to two years in prison and 13 years of probation. Johnson was sentenced to a year in prison and five years of probation. They’ve collectively been ordered to pay about $25,500 in restitution.